how cagth categorical featrues in pandas code example

Example 1: using df.astype to select categorical data and numerical data

df = pd.DataFrame({'vertebrates': ['Bird', 'Bird', 'Mammal', 'Fish', 'Amphibian', 'Reptile', 'Mammal']})

df.vertebrates.astype("category").cat.codes

Example 2: using df.astype to select categorical data and numerical data

df.satisfaction.astype("category",
  ordered=True,
  categories=ordered_satisfaction
)

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